{"abstract":"This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all British Aerospace Model BAe 146-100A, -200A, and -300A series airplanes. This proposal would require conducting closed loop tests to determine the setting of the underfrequency trip level on suspect generator control units (GCU), and either the correction of discrepancies or replacement of the GCU. This proposal is prompted by several malfunctions of in-service GCU's due to the effects of setting the underfrequency trip level too high. The actions specified by the proposed AD are intended to correct GCU's that may have the underfrequency level set too high, which could result in the unwanted shut down of an electrical generator; this condition may lead to loss of all generated electrical power on the airplane when other generator faults or failures occur.","action":"Notice of proposed rulemaking (NPRM).","agencies":[{"raw_name":"DEPARTMENT OF TRANSPORTATION","name":"Transportation Department","id":492,"url":"https://www.federalregister.gov/agencies/transportation-department","json_url":"https://www.federalregister.gov/api/v1/agencies/492.json","parent_id":null,"slug":"transportation-department"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/1994/11/16/94-28245.html","cfr_references":[{"title":14,"part":39,"chapter":null,"citation_url":null}],"citation":null,"comment_url":null,"comments_close_on":"1995-01-13","correction_of":null,"corrections":[],"dates":"Comments must be received by January 13, 1995.","docket_ids":["Federal Register: November 16, 1994","Docket No. 94-NM-126-AD"],"document_number":"94-28245","effective_on":null,"end_page":0,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":null,"html_url":"https://www.federalregister.gov/documents/1994/11/16/94-28245/airworthiness-directives-british-aerospace-model-bae-146-100a---200a-and--300a-series-airplanes","images":{},"json_url":"https://www.federalregister.gov/api/v1/documents/94-28245.json","mods_url":"https://www.gpo.gov/fdsys/granule/FR-1994-11-16/94-28245/mods.xml","page_length":1,"pdf_url":null,"public_inspection_pdf_url":null,"publication_date":"1994-11-16","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/1994/11/16/94-28245.txt","regulation_id_number_info":{},"regulation_id_numbers":[],"regulations_dot_gov_info":{},"regulations_dot_gov_url":null,"significant":false,"signing_date":null,"start_page":0,"subtype":null,"title":"Airworthiness Directives; British Aerospace Model BAe 146-100A, - 200A, and -300A Series Airplanes","toc_doc":null,"toc_subject":null,"topics":[],"type":"Uncategorized Document","volume":59}